i am attempting to cut out a sink hole in my new laminate kithchen
countertop. i have laid out the cutout on the top side and plan on
drilling a half inch hole in each corner with a spade bit. the
countertop guy said to cut the hole from the bottom because the jigsaw
will not allow for a close cut next to the backsplash. the countertop
guy also said to use an upcut jigsaw blade...dumb question time...does
an upcut blade have the teeth facing up? the home depot kid did not
know.should i use a finer teeth blade or coarse?
wish me luck, if i screw this up mammasan will be massively upset!
The saw blade will tear up the top side (laminate side) if you cut from the
top,the teeth cut upwards.(standard blade)
Cutting from underneath,you have more room for the jigsaw base against the
back of the cabinet,because there's no backsplash taking up space.You don't
care about chipping underneath,it will not be seen.
If cutting from underneath.Then the teeth will be cutting DOWN against the
laminate,less tearout or chipping.
It cuts on the UPstroke.That is a standard jigsaw blade.
Fine teeth will damage the laminate less.
Get a scrap of laminated board,and test-cut with your saw,
see what happens.
Get a feel for the task before you chop up the good stuff.
Well, try cutting a small section out of the middle 1st to make sure
you have the blade selection and usage correct.
You have enough room for probably 4 practice holes at least, so
practice before going 'live'!
I'd say fine tooth blade. Yes, upcut so that cutting action is toward
laminate surface, instead of breaking off jagged chunks of it. Did
they also tell you to tape over laminate along line of cut(also helps
prevent shattering)? Use a 1 or 2" wide clear tape. Try to make sure
there is good support fairly close to line of cut, say 1/2 to 1" away.
And remember, the sink is going to hide minor flaws- it's the big ones
you need to prevent. Measure twice, cut once.
Couple of thoughts:
1. Is counter top already installed? If not cut hole before installing.
2. I score the line on the top with a carpenters knife. This helps
prevent breakout of the laminate.
3. I cut from the top down, after I have run my router with straight bit
around the pre scored opening to groove the laminate. Make a fence to guid
the router. I don't penetrate the laminate to the base just about half way
through. Now drill your corner holes with 3/4" or 1" bit.
4. Place masking tape on top around the scored top. You run your jig saw
on the tape so to prevent marring the surface top. Murphy's law says - a
scrach will appear if you run the saw directly on the surface!
5. Wear a full face mask and cut your top out and finish file it.
6. Once the sink is installed it will look like a professional did it!
Good luck and have fun. Evon
Cutting from the bottom is OK - but not at my level of skill.
> i am attempting to cut out a sink hole in my new laminate kithchen
> countertop. i have laid out the cutout on the top side and plan on
> drilling a half inch hole in each corner with a spade bit. the
> countertop guy said to cut the hole from the bottom because the jigsaw
> will not allow for a close cut next to the backsplash. the countertop
> guy also said to use an upcut jigsaw blade...dumb question time...does
> an upcut blade have the teeth facing up? the home depot kid did not
> know.should i use a finer teeth blade or coarse?
> wish me luck, if i screw this up mammasan will be massively upset!
> thanks cj
When cutting from the top use a reverse tooth blade.
Cover the shoe of the jigsaw with tape to protect the
top from scratching. The saw will try to jump away from
the top .... press down firmly to keep it from hopping
all over the place.
Practice on a mini cut-out inside your final cut-out.
Clearance between the back splash and the cutout ...
depends on your saw.
For easiest cutting. Cut from the bottom before
installing the top. Use a normal fine tooth jigsaw
cut and paste the url into a web browser for an example
of reverse tooth blade.
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